Prediction of acoustic agglomeration enhanced by solid seed particles using the DSMC method

IF 4.2 2区工程技术 Q2 ENGINEERING, CHEMICAL

Advanced Powder Technology Pub Date : 2025-04-23 DOI:10.1016/j.apt.2025.104902

Junxu Su , Zhihao Wu , Fengxian Fan , Xiaohong Hu , Mingxu Su

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Abstract

Acoustic agglomeration enhanced by large-sized solid seed particles is investigated using the direct simulation Monte Carlo (DSMC) method. The process of acoustic agglomeration is revealed in terms of temporal evolution of velocities, diameters, and number weights of simulated particles, as well as normalized concentration and average diameter of small particles. Furthermore, the enhancement of acoustic agglomeration by the solid seed particles is evaluated at varying parameters. The results show that the agglomeration performance is enhanced within a shorter residence time when the solid seed particles are present. Increasing acoustic intensity or solid seed particle concentration leads to more efficient acoustic agglomeration, while the acoustic frequency, particularly beyond 2 kHz, has little effect on agglomeration performance. Moreover, a noticeable increase in agglomeration efficiency is observed when the seed particle diameter increases from 20 to 40 µm. However, once it exceeds 40 µm, the increase in agglomeration efficiency diminishes.

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用DSMC方法预测固体种子颗粒增强的声团聚

采用直接模拟蒙特卡罗（DSMC）方法研究了大尺寸固体种子颗粒对声团聚的增强作用。通过模拟颗粒的速度、直径、数权以及小颗粒的归一化浓度和平均直径的时间演变揭示了声团聚过程。此外，研究了固体种子颗粒在不同参数下对声团聚的增强作用。结果表明，固体种子颗粒存在时，团聚性能在较短的停留时间内得到增强。提高声强或固体种子颗粒浓度可以提高声团聚效率，而声频率对团聚性能的影响很小，特别是在2 kHz以上。当种子粒径从20µm增大到40µm时，团聚效率显著提高。然而，一旦超过40µm，团聚效率的提高就会减小。

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来源期刊

Advanced Powder Technology 工程技术-工程：化工

CiteScore

9.50

自引率

7.70%

发文量

424

审稿时长

55 days

期刊介绍： The aim of Advanced Powder Technology is to meet the demand for an international journal that integrates all aspects of science and technology research on powder and particulate materials. The journal fulfills this purpose by publishing original research papers, rapid communications, reviews, and translated articles by prominent researchers worldwide. The editorial work of Advanced Powder Technology, which was founded as the International Journal of the Society of Powder Technology, Japan, is now shared by distinguished board members, who operate in a unique framework designed to respond to the increasing global demand for articles on not only powder and particles, but also on various materials produced from them. Advanced Powder Technology covers various areas, but a discussion of powder and particles is required in articles. Topics include: Production of powder and particulate materials in gases and liquids(nanoparticles, fine ceramics, pharmaceuticals, novel functional materials, etc.); Aerosol and colloidal processing; Powder and particle characterization; Dynamics and phenomena; Calculation and simulation (CFD, DEM, Monte Carlo method, population balance, etc.); Measurement and control of powder processes; Particle modification; Comminution; Powder handling and operations (storage, transport, granulation, separation, fluidization, etc.)